Congenital malformations of larynx (Q31)
ICD-10 code section Q31 covers a range of congenital malformations of the larynx, which are birth defects affecting the voice box. These codes are used to identify specific structural abnormalities present from birth that can impact breathing, voice, and airway function.
The section includes detailed codes such as Q31.0 for a web of larynx (also known as congenital glottic or subglottic web), Q31.1 for congenital subglottic stenosis which involves narrowing below the vocal cords, and Q31.5 for congenital laryngomalacia, a common cause of floppy airway tissue. Other notable codes include Q31.3 for laryngocele (a congenital laryngeal cyst) and Q31.8 for other complex malformations like laryngeal clefts or absent larynx parts. The Q31.9 code is reserved for unspecified congenital larynx malformations where the exact defect is not detailed. Using these ICD-10 codes helps healthcare professionals document and treat specific congenital laryngeal conditions accurately, aiding appropriate clinical management and communication.
Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Congenital malformations of the respiratory system (Q30-Q34)
Q31 Congenital malformations of larynx
- Q31.0 Web of larynx
- Q31.1 Congenital subglottic stenosis
- Q31.2 Laryngeal hypoplasia
- Q31.3 Laryngocele
- Q31.5 Congenital laryngomalacia
- Q31.8 Other congenital malformations of larynx
- Q31.9 Congenital malformation of larynx, unspecified
Congenital malformations of larynx (Q31)
Instructional Notations
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- congenital laryngeal stridor NOS P28.89
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Laryngocele
Congenital anomalous dilitation of the laryngeal saccule that may extend internally into the airway or externally through the thyrohyoid membrane.
Laryngomalacia
A congenital or acquired condition of underdeveloped or degeneration of CARTILAGE in the LARYNX. This results in a floppy laryngeal wall making patency difficult to maintain.
Tracheomalacia
A congenital or acquired condition of underdeveloped or degeneration of CARTILAGE in the TRACHEA. This results in a floppy tracheal wall making patency difficult to maintain. It is characterized by wheezing and difficult breathing.
